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As the title says, here's the log:

[16:42:13] [main/INFO] [LaunchWrapper]: Loading tweak class name net.minecraftforge.fml.common.launcher.FMLTweaker
[16:42:13] [main/INFO] [LaunchWrapper]: Using primary tweak class name net.minecraftforge.fml.common.launcher.FMLTweaker
[16:42:13] [main/INFO] [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.common.launcher.FMLTweaker
[16:42:13] [main/INFO] [FML]: Forge Mod Loader version 8.0.37.1334 for Minecraft 1.8 loading
[16:42:13] [main/INFO] [FML]: Java is Java HotSpot(TM) 64-Bit Server VM, version 1.8.0_25, running on Windows 8.1:amd64:6.3, installed at C:\Users\drago_000\AppData\Local\Microsoft\Windows\INetCache\IE\Q917NESF\runtime\jre-x64\1.8.0_25
[16:42:13] [main/WARN] [FML]: The coremod codechicken.core.launch.CodeChickenCorePlugin does not have a MCVersion annotation, it may cause issues with this version of Minecraft
[16:42:14] [main/WARN] [FML]: The coremod codechicken.lib.asm.CCLCorePlugin does not have a MCVersion annotation, it may cause issues with this version of Minecraft
[16:42:14] [main/WARN] [FML]: The coremod codechicken.lib.asm.CCLCorePlugin does not have a MCVersion annotation, it may cause issues with this version of Minecraft
[16:42:14] [main/WARN] [FML]: The coremod codechicken.nei.asm.NEICorePlugin does not have a MCVersion annotation, it may cause issues with this version of Minecraft
[16:42:14] [main/INFO] [FML]: Loading tweaker optifine.OptiFineForgeTweaker from OptiFine_1.8.1_HD_U_C7.jar
[16:42:14] [main/INFO] [FML]: Loading tweaker shadersmod.launch.SMCTweaker from ShadersMod-v2.4.12mc1.8.jar
[16:42:14] [main/INFO] [LaunchWrapper]: Loading tweak class name net.minecraftforge.fml.common.launcher.FMLInjectionAndSortingTweaker
[16:42:14] [main/INFO] [LaunchWrapper]: Loading tweak class name optifine.OptiFineForgeTweaker
[16:42:14] [main/INFO] [LaunchWrapper]: Loading tweak class name shadersmod.launch.SMCTweaker
[16:42:14] [main/INFO] [LaunchWrapper]: Loading tweak class name net.minecraftforge.fml.common.launcher.FMLDeobfTweaker
[16:42:14] [main/INFO] [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.common.launcher.FMLInjectionAndSortingTweaker
[16:42:14] [main/INFO] [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.common.launcher.FMLInjectionAndSortingTweaker
[16:42:14] [main/INFO] [LaunchWrapper]: Calling tweak class optifine.OptiFineForgeTweaker
[16:42:14] [main/INFO] [STDOUT]: [optifine.OptiFineForgeTweaker:dbg:49]: OptiFineForgeTweaker: acceptOptions
[16:42:14] [main/INFO] [STDOUT]: [optifine.OptiFineForgeTweaker:dbg:49]: OptiFineForgeTweaker: injectIntoClassLoader
[16:42:14] [main/INFO] [STDOUT]: [optifine.OptiFineClassTransformer:dbg:179]: OptiFine ClassTransformer
[16:42:14] [main/INFO] [STDOUT]: [optifine.OptiFineClassTransformer:dbg:179]: OptiFine URL: file:/C:/Users/drago_000/AppData/Roaming/.minecraft/mods/OptiFine_1.8.1_HD_U_C7.jar
[16:42:14] [main/INFO] [STDOUT]: [optifine.OptiFineClassTransformer:dbg:179]: OptiFine ZIP file: [email protected]
[16:42:14] [main/INFO] [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.relauncher.CoreModManager$FMLPluginWrapper
[16:42:17] [main/INFO] [FML]: Found valid fingerprint for Minecraft Forge. Certificate fingerprint e3c3d50c7c986df74c645c0ac54639741c90a557
[16:42:17] [main/INFO] [FML]: Found valid fingerprint for Minecraft. Certificate fingerprint cd99959656f753dc28d863b46769f7f8fbaefcfc
[16:42:17] [main/INFO] [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.relauncher.CoreModManager$FMLPluginWrapper
[16:42:17] [main/INFO] [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.relauncher.CoreModManager$FMLPluginWrapper
[16:42:17] [main/INFO] [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.relauncher.CoreModManager$FMLPluginWrapper
[16:42:17] [main/INFO] [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.relauncher.CoreModManager$FMLPluginWrapper
[16:42:17] [main/INFO] [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.relauncher.CoreModManager$FMLPluginWrapper
[16:42:17] [main/INFO] [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.relauncher.CoreModManager$FMLPluginWrapper
[16:42:17] [main/INFO] [LaunchWrapper]: Calling tweak class shadersmod.launch.SMCTweaker
[SMC INF]ShadersMod 2.4.12
[16:42:17] [main/INFO] [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.common.launcher.FMLDeobfTweaker
[16:42:18] [main/INFO] [LaunchWrapper]: Loading tweak class name net.minecraftforge.fml.common.launcher.TerminalTweaker
[16:42:18] [main/INFO] [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.common.launcher.TerminalTweaker
[16:42:18] [main/INFO] [STDOUT]: [optifine.OptiFineForgeTweaker:dbg:49]: OptiFineForgeTweaker: getLaunchArguments
[16:42:18] [main/INFO] [LaunchWrapper]: Launching wrapped minecraft {net.minecraft.client.main.Main}
[SMC FNE]transforming bsu net.minecraft.client.Minecraft
[16:42:19] [main/ERROR] [LaunchWrapper]: Unable to launch
java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_25]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_25]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_25]
at java.lang.reflect.Method.invoke(Method.java:483) ~[?:1.8.0_25]
at net.minecraft.launchwrapper.Launch.launch(Launch.java:135) [launchwrapper-1.11.jar:?]
at net.minecraft.launchwrapper.Launch.main(Launch.java:28) [launchwrapper-1.11.jar:?]
Caused by: java.lang.VerifyError: Bad type on operand stack
Exception Details:
Location:
net/minecraft/client/Minecraft.func_147121_ag()V @188: invokestatic
Reason:
Type 'net/minecraft/client/multiplayer/WorldClient' (current frame, stack[2]) is not assignable to 'net/minecraft/world/World'
Current Frame:
bci: @188
flags: { }
locals: { 'net/minecraft/client/Minecraft', integer, 'net/minecraft/item/ItemStack', 'net/minecraft/util/BlockPos', integer }
stack: { 'net/minecraft/client/entity/EntityPlayerSP', 'net/minecraftforge/event/entity/player/PlayerInteractEvent$Action', 'net/minecraft/client/multiplayer/WorldClient', 'net/minecraft/util/BlockPos', 'net/minecraft/util/EnumFacing' }
Bytecode:
0x0000000: 2a07 b508 7e04 3c2a b406 23b4 0882 b608
0x0000010: 884d 2ab4 082b c700 11b2 01ca 1308 68b9
0x0000020: 088b 0200 a701 1ab2 086e 2ab4 082b b408
0x0000030: 2fb6 0871 2eab 0000 0000 0109 0000 0002
0x0000040: 0000 0001 0000 001b 0000 0002 0000 0053
0x0000050: 2ab4 084e 2ab4 0623 2ab4 082b b408 742a
0x0000060: b408 2bb6 0891 9900 0803 3ca7 00d3 2ab4
0x0000070: 084e 2ab4 0623 2ab4 082b b408 74b6 0895
0x0000080: 9900 be03 3ca7 00b9 2ab4 082b b608 364e
0x0000090: 2ab4 03c8 2db6 0899 9a00 a62c c600 0a2c
0x00000a0: b408 9ca7 0004 0336 042a b406 23b2 08a2
0x00000b0: 2ab4 03c8 2d2a b408 2bb4 0852 b808 a8b6
0x00000c0: 08ab 9a00 0704 a700 0403 3605 1505 9900
0x00000d0: 2e2a b408 4e2a b406 232a b403 c82c 2d2a
0x00000e0: b408 2bb4 0852 2ab4 082b b408 afb6 08b3
0x00000f0: 9900 0c03 3c2a b406 23b6 085f 2cc7 0004
0x0000100: b12c b408 9c9a 001c 2ab4 0623 b408 82b4
0x0000110: 08b7 2ab4 0623 b408 82b4 08ba 0153 a700
0x0000120: 202c b408 9c15 04a0 000d 2ab4 084e b608
0x0000130: bd99 000d 2ab4 03ab b408 c0b6 08c3 1b99
0x0000140: 002f 2ab4 0623 b408 82b6 0888 4e2d c600
0x0000150: 202a b408 4e2a b406 232a b403 c82d b608
0x0000160: c799 000d 2ab4 03ab b408 c0b6 08ca b1
Stackmap Table:
append_frame(@39,Integer,Object[#2189])
same_frame(@80)
same_frame(@110)
same_frame(@136)
append_frame(@166,Object[#2206])
same_locals_1_stack_item_frame(@167,Integer)
append_frame(@201,Integer)
same_locals_1_stack_item_frame(@202,Integer)
append_frame(@252,Integer)
same_frame(@257)
same_frame(@289)
same_frame(@308)
chop_frame(@318,3)
same_frame(@366)

at net.minecraft.client.main.Main.main(SourceFile:40) ~[Main.class:?]
... 6 more

You expected optifine for 1.8.1 to work on forge for 1.8?